131994249 has 8 divisors (see below), whose sum is σ = 181669632. Its totient is φ = 85157520.

The previous prime is 131994241. The next prime is 131994257. The reversal of 131994249 is 942499131.

It is an interprime number because it is at equal distance from previous prime (131994241) and next prime (131994257).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131994249 - 2³ = 131994241 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131994249.

It is not an unprimeable number, because it can be changed into a prime (131994241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709554 + ... + 709739.

It is an arithmetic number, because the mean of its divisors is an integer number (22708704).

Almost surely, 2^131994249 is an apocalyptic number.

It is an amenable number.

131994249 is a deficient number, since it is larger than the sum of its proper divisors (49675383).

131994249 is a wasteful number, since it uses less digits than its factorization.

131994249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419327.

The product of its digits is 69984, while the sum is 42.

The square root of 131994249 is about 11488.8750102001. The cubic root of 131994249 is about 509.1569424038.

The spelling of 131994249 in words is "one hundred thirty-one million, nine hundred ninety-four thousand, two hundred forty-nine".